Agroup of students were asked to identify three white powders. the students use the physical and chemical properties to identify the powders. they computed the density of each powder. they check to see if any dissolved in water. one of the powders did not dissolve in water and they thought it was corn starch. they knew that cornstarch felt slippery and reacted with iodine. the students put a few drops of iodine on each white powder. one powder turned black it was definitely cornstarch. another powder, baking soda reacted with vinegar. it first and the test tube got hot. which of these is an observed chemical property? a. color of powders b. density of powders c. powder dissolved in water d. powder reacts with vinegar? me
Answers: 1
Chemistry, 21.06.2019 21:30
Calculate the h3o+ concentration in a solution of acetic acid if the concentration of molecular acetic acid present at equilibrium is 9.97x10^-3 m and k for the dissociation is 1.86x10^-5. ch3cooh(aq)+h2o(> h3o^+(aq)+ch3coo^-(aq)
Answers: 2
Chemistry, 22.06.2019 04:30
What are the three major branches of natural science? • earth and space science, life science, physical science •earth and space science, physical science, chemistry •physical science, life science, chemistry •life science, chemistry, physics
Answers: 1
Chemistry, 23.06.2019 02:30
When the ionic compound nabr dissolves in water, br– ions are pulled into solution by the attraction between what two particles? a. the na+ and br– ions b. the na+ ion and the negative end of a water molecule c. the br– ion and the positive end of a water molecule d. the br– ion and the negative end of a water molecule
Answers: 1
Agroup of students were asked to identify three white powders. the students use the physical and che...
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